Yes. I've got the Klymit Inertia X-Wave. It packs to a very small size and is very lightweight. I used it on a training hike to Walls of Jericho in Northeast Alabama and then a four-day, five-night hike across and back the Grand Canyon. I down-scaled to the Klymit from a Neo-Air Trekker. I really didn't think the difference in thickness made that much of a difference to me. The torso-only versus full-size was a big deal and I had to bring my pack into my tent to keep my legs off the cold ground. I think the Klymit O-Zone is a good compromise between the X-Wave and a fuller mattress and I may go that direction in the future.